[Perf] ubuntu 20.04/arm64 : Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests on 8/11/2022 10:02:44 AM

[performanceautofiler]

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	85aa0521681592bb0ae4c6c89f7fb97895e2c7fc
Compare	deac993c3640730e5f4acaed8d257dde0b17c2fe
Diff	Diff

Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Utf8JsonReaderCommentParsing - Duration of single invocation	16.63 μs	19.90 μs	1.20	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Tests.Utf8JsonReaderCommentsTests*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Allow, SegmentSize: 100, TestCase: LongMultiLine)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 19.90144877700127 > 17.44842946942619.
IsChangePoint: Marked as a change because one of 7/2/2022 7:35:06 PM, 7/6/2022 3:55:24 AM, 8/11/2022 4:03:37 AM, 8/18/2022 11:13:04 AM falls between 8/9/2022 9:33:37 PM and 8/18/2022 11:13:04 AM.
IsRegressionStdDev: Marked as regression because -88.24562840213467 (T) = (0 -19694.055205405868) / Math.Sqrt((10152.604883938444 / (21)) + (23337.830850333976 / (35))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (35) - 2, .025) and -0.17920200235726796 = (16701.171780608183 - 19694.055205405868) / 16701.171780608183 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Tagging subscribers to this area: @dotnet/area-system-text-json, @gregsdennis
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Run Information

Architecture	arm64
OS	ubuntu 20.04
Baseline	85aa0521681592bb0ae4c6c89f7fb97895e2c7fc
Compare	deac993c3640730e5f4acaed8d257dde0b17c2fe
Diff	Diff

Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Utf8JsonReaderCommentParsing - Duration of single invocation	16.63 μs	19.90 μs	1.20	0.01	False

Test Report

Repro

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Text.Json.Tests.Utf8JsonReaderCommentsTests*'

Payloads

Baseline
Compare

Histogram

System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Allow, SegmentSize: 100, TestCase: LongMultiLine)

Description of detection logic

IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 19.90144877700127 > 17.44842946942619.
IsChangePoint: Marked as a change because one of 7/2/2022 7:35:06 PM, 7/6/2022 3:55:24 AM, 8/11/2022 4:03:37 AM, 8/18/2022 11:13:04 AM falls between 8/9/2022 9:33:37 PM and 8/18/2022 11:13:04 AM.
IsRegressionStdDev: Marked as regression because -88.24562840213467 (T) = (0 -19694.055205405868) / Math.Sqrt((10152.604883938444 / (21)) + (23337.830850333976 / (35))) is less than -2.0048792881871513 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (21) + (35) - 2, .025) and -0.17920200235726796 = (16701.171780608183 - 19694.055205405868) / 16701.171780608183 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Author:	performanceautofiler[bot]
Assignees:	kunalspathak
Labels:	area-System.Text.Json, untriaged, refs/heads/main, RunKind=micro, Regression, CoreClr, arm64, ubuntu 20.04, Ampere
Milestone:	-